1-ペンタンチオール 化学特性,用途語,生産方法
外観
無色～ほとんど無色、液体
化学的特性
clear colorless liquid; meaty aroma. slightly soluble in water, easily soluble in alcohol and ether.
使用
1-Pentanethiol can be used as additives for hair coloring agents.
製造方法
1-Pentanethiol is synthesized from n-pentyl alcohol and hydrogen sulfide catalyzed by thorium dioxide.
一般的な説明
1-Pentanethiol appears as a clear colorless to light-yellow liquid with an offensive odor. Flash point 65°F. Less dense than water and insoluble in water. Hence floats on water. Vapors are heavier than air. May be toxic by inhalation.
空気と水の反応
Highly flammable. Insoluble in water.
反応プロフィール
1-Pentanethiol is incompatible with oxidizing agents, reducing agents, alkali metals, calcium hypochlorite, concentrated nitric acid .
健康ハザード
Inhalation may cause nausea because of offensive odor. Contact with eyes or skin causes slight irritation. Ingestion may cause vomiting.
安全性プロファイル
Moderately toxic by inhalation. A weak sensitizer and allergen. Local contact may cause contact dermatitis. A flammable liquid and dangerous fire hazard when exposed to heat or flame; can react vigorously with oxidming materials. Hypergolic reaction with concentrated nitric acid. To fight fire, use foam, CO2, dry chemical. See also MERCAPTANS
Solubility in organics
Soluble in alcohol, perfume and flavor materials.
純化方法
Dissolve the thiol in aqueous 20% NaOH, then extract with a small amount of diethyl ether. The aqueous solution is acidified slightly with 15% H2SO4, and the thiol is distilled out, dried with CaSO4 or CaCl2, and fractionally distilled under nitrogen. [Ellis & Reid J Am Chem Soc 54 1674 1932, Beilstein 1 IV 1453.]
1-ペンタンチオール 上流と下流の製品情報
原材料
準備製品